Ing. Cristian Obersterescu

Selbstständig, Network Engineer, SBB CFF FFS

Zurich, Schweiz

Über mich

I'm not very active here, please contact me on LinkedIN Nich sehr aktiv hier, bitte LinkedIN benutzen https://www.linkedin.com/in/cristian-obersterescu-b29478122/

Fähigkeiten und Kenntnisse

2G
GSM
GSM/GSM 2.5 Engineering
HSDPA
3G
4G
LTE
IOT
Accounting
Linux
Teamwork
Telecommunications
Fixed Network
Transmission
DSL
Heterogeneous network
Small Cells
Vendor
Wissen
Cisco
Switching

Werdegang

Berufserfahrung von Cristian Obersterescu

  • Bis heute 4 Jahre und 1 Monat, seit Sep. 2020

    Network Engineer

    SBB CFF FFS
  • 9 Monate, Jan. 2020 - Sep. 2020

    IP/MPLS Network Engineer

    Telefónica Deutschland Gruppe

    • Software upgrade, swap, integration and configuration of core packet nodes and other routers. • Integration and verification of new transmission patches (optical fiber) • Conduction of impact/outage analysis on the live network prior to implementation work. • Conduction of troubleshooting measurements during the technical work, when needed. • Maintenance of all corresponding project technical reporting and documentation.

  • 8 Monate, Mai 2019 - Dez. 2019

    Advanced Troubleshooting & Business Support

    Telefónica Deutschland Gruppe

    - Cisco, Juniper and OneAccess network components - Good knowledge of MPLS, VPLS and other transport technologies - Good knowledge of dynamic routing protocols (eg OSPF, BGP) - working with various access technologies (DSL, FTTx) and transmission technologies (ETH) - Knowledge in QoS, VoIP, security, especially IPSec - Basic knowledge of network services (eg radius, DNS)

  • 1 Jahr, Mai 2018 - Apr. 2019

    IP/TRM Engineer

    Telefónica Deutschland Gruppe

  • 1 Jahr, Juni 2017 - Mai 2018

    Radio Network Perfromance Engineer

    Nokia

    - RAN KPI Expert - Advanced knowledge of mobile communication networks (2G, 3G , 4G & SRAN) - Good knowledge on network performance evaluation like - Quality of Service and Experience (QoS and QoE) Product Validation & KPI Monitoring - NetAct 17 / Linux / Wireshark

  • 1 Jahr, Juli 2016 - Juni 2017

    Network Technician

    Nokia

    - Advanced knowledge in Fixed Network - Access (also understanding Core & Transport ) - Network monitoring, troubleshooting and maintenance on Vendor equipment within SLA - Working with different Vendor Equipment & Creating Work Instructions - Linux

Ausbildung von Cristian Obersterescu

  • 3 Jahre und 9 Monate, Sep. 2013 - Mai 2017

    Electronics and Communication Engineering

    Polytechnic University of Timişoara

    Electronics & Telecommunications

Sprachen

  • Deutsch

    Fließend

  • Englisch

    Muttersprache

  • Rumänisch

    Muttersprache

  • Französisch

    Grundlagen

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